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A refresher on measurements:
millimetre (mm); centimetre (cm); metre (m)
milligram (mg); gram (g); kilogram (kg)
square millimetre (mm2); square centimetre (cm2); square metre (m2)
cubic millimetre (mm3); cubic centimetre (cm3); cubic metre (m3)
millilitre (ml or mL); litre (l or L)
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